This is official site of Black Water Dive® produced by photographer Ryo Minemizu. Black Water Dive® is a kind of night diving. We are setting up underwater lights of high-color rendering on the sea bottom of night that while considering tides, times, places. The creature which appears is mainly juveniles and larvae. All is fascinating, and it's not to be seen at daytime or regular night diving. It will be your first experience. This site will introduce the state of the event and the creatures seen and also future of BWD schedules. *"BWD"stands for Black Water Dive®.*Black Water Dive® is a registered trademark of Ryo Minemizu.

2016年4月1日金曜日

Unidentified Clionidae species in Toyama Bay.

We did pre Black Water Dive® at Namerikawa of Toyama Bay from 18th Mar to 20th Mar. Sea temperature was 10 degree. Visibility is not very well at that time, the results are were few. Most that we have found, it's common in the drifting plankton and nekton. However, there was a new discovery.
This is a very small Clionidae species. Size only 2mm. Cilia ring is three-stage.
So far, C, limacina limacina has not a report from Toyama Bay.
This species has also been reported from water sampling facilities of deep sea water of Toyama so far, and it has been found to be a new species.

larva of Clione limacina limacina
Clionidae species
Oct/12/2017 Postscript
There seems to be some announcement today.
http://www.tokyo-np.co.jp/s/article/2017101201000867.html
http://www.sanyonews.jp/article/610835/1/
富山湾で発見されたクリオネの仲間ですが、蘭越町貝の館の山崎さんや富山大学らの共同研究により、新種記載されることになりました。